ISA may require an upgrade to work with Vista. Your IT staffer will make the call, get the patches and set it up.
I am facing a very strange problem with Windows Vista. The thing is that we have a web server with ISA monitoring through which everyone pass to get access to the internet. However for managers we used to give the direct IP of the router in the Default Gateway and they were connected directly to the internet without going through web server. All was well in XP but now we got a new laptop for our manager with Windows Vista Business Edition. Now when we try to give the IP of the router it doesn't accept it and the internet is not working on the laptop. I have tried it on another system with Vista in our office but same problem. So anyone knows what I might be doing wrong or if I have to change some settings here or there